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Gluon-gluon contributions to the production of continuum diphoton pairs at hadron colliders

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arxiv hep-ph/0702003 v3 pith:JBTC5A5K submitted 2007-02-01 hep-ph

P. Nadolsky , C. Balazs , E. L. Berger , C.-P. Yuan This is my paper · ORCID
classification hep-ph
keywords contributionsgluon-gluonhadroncollidercolliderscontinuumcrossdiphoton
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We compute the contributions to continuum photon pair production at hadron colliders from processes initiated by gluon-gluon and gluon-quark scattering into two photons through a four-leg virtual quark loop. Complete two-loop cross sections in perturbative quantum chromodynamics are combined with contributions from soft parton radiation resummed to all orders in the strong coupling strength. The structure of the resummed cross section is examined in detail, including a new type of unintegrated parton distribution function affecting azimuthal angle distributions of photons in the pair's rest frame. As a result of this analysis, we predict diphoton transverse momentum distributions in gluon-gluon scattering in wide ranges of kinematic parameters at the Fermilab Tevatron collider and the CERN Large Hadron Collider.

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Cited by 4 Pith papers

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    Gluonic nucleon energy correlators in the CGC reduce at eikonal accuracy to the unpolarized and linearly polarized gluon components, both given by the adjoint dipole S-matrix, and the linearly polarized one drives a s...

  2. First constraints on the nonperturbative gluon Collins-Soper kernel

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    First lattice-QCD constraints on the nonperturbative gluon Collins-Soper kernel are obtained at near-physical pion mass with uNNLL LaMET matching on a single a=0.15 fm ensemble.

  3. The N$^3$LO Twist-2 Matching of Linearly Polarized Gluon TMDs

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    Computes N³LO twist-2 matching for linearly polarized gluon TMDs with NNLL small-x resummation for fragmentation functions.

  4. Maximum phase-space density of linearly polarized gluon TMDs in the saturation region

    hep-ph 2026-05 unverdicted novelty 5.0 of 10

    For the dipole gluon TMD, the Sudakov-limited maximum phase-space density of h_1^{⊥g} is 2 n_g^{max} ∼ 2 α_s^{-3/2} in the saturation region.

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